Diamonds Made in San Francisco

Impeccable Provenance

Our diamonds are created in San Francisco in a foundry that re-creates the way in which Earth forms diamond.

Unlike brute-force mining, our production is elegant and intensely based on modern-day craftsmanship.

While diamonds generally pass through a dozen owners with an origin impossible to trace, our diamonds are guaranteed from us and not pre-owned.

For a diamond as rock solid as your values.

Each Unique & Rare

Just like ice from a freezer is as real as ice from a winter roof, ours are real diamonds. The only difference is origin — and the reassurance that it was created in America without questionable practices.

Our diamonds are very rare. Fewer than 0.01% of all diamonds are ours. That’s because our production is 1,000 harder to scale than industrial mining.

Each diamond grows in its own way, with one-of-a-kind inclusions and unique growth patterns. No two man-made diamonds are alike. Each is unique to the core.

Masterfully Cut

Our diamonds are cut to the most exacting standards by our polishing operation whose management hails from Antwerp, Belgium with three generations of experience in diamonds.

Our master cutters made notable contributions to the industry — one invented the Princess Cut and the other directed the American School of Diamond Cutting.

Uncompromising Quality

We cut for excellent quality, not for optimized weight.

Each diamond is graded by a GIA Gemologist according to the strictest professional standards.

We certify & warrant the reported Cut, Color, Clarity, and Carats.

We even guarantee 100% of your diamond’s value.

Our Cuts

We offer all classic cuts as well as special master cuts developed by us.

Classic Cuts

Exclusive Cuts

100 Years in Jewells Business

Today, Joseph Schubach builds upon his family's experience and continues the tradition with Joseph Schubach
Jewelers, offering both intimate jewelry brokering in his Scottsdale, Arizona showroom and full-service
online sales to clients from around the world, where he has maintained that personal customer connection in
the virtual world.